Question

7) If a resistor of resistance 40 produce 1000J of heat energy, the potential difference between the two of the resistor is :​

Answer 1

Answer-

Given,

H=1000J;R= 40 ohm ;

Then,

I =√H/RT

= √1000/40x1

=√25

=5A

Therefore,

P.D= IR

=5x40

=200V

Answer 2

Given : a resistor of resistance 40 Ω produce 1000J of heat energy,

To Find : the potential difference between the two ends of the resistor

Solution:

Heat produced = V²/R

Heat produced  = 1000 J

Resistance =  40 Ω

V²/40  = 1000

=> V² = 40 * 1000

=> V = 200  V

potential difference between the two of the resistor = 200V

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